/*
 * Copyright (c) 2003, Rafael Steil
 * All rights reserved.

 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:

 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * This file creation date: 03/09/2003 / 23:42:55
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum.repository;

import java.util.Iterator;
import java.util.List;

import net.jforum.cache.CacheEngine;
import net.jforum.cache.Cacheable;
import net.jforum.dao.DataAccessDriver;
import net.jforum.dao.RankingDAO;
import net.jforum.entities.Ranking;
import net.jforum.exceptions.RankingLoadException;

/**
 * @author Rafael Steil
 * @version $Id$
 */
public class RankingRepository implements Cacheable {
	private static CacheEngine cache;
	private static final String FQN = "ranking";
	private static final String ENTRIES = "entries";

	/**
	 * @see net.jforum.cache.Cacheable#setCacheEngine(net.jforum.cache.CacheEngine)
	 */
	public void setCacheEngine(CacheEngine engine) {
		cache = engine;
	}

	public static void loadRanks() {
		try {
			RankingDAO rm = DataAccessDriver.getInstance().newRankingDAO();
			cache.add(FQN, ENTRIES, rm.selectAll());
		} catch (Exception e) {
			throw new RankingLoadException("Error while loading the rankings: "
					+ e);
		}
	}

	public static int size() {
		return ((List) cache.get(FQN, ENTRIES)).size();
	}

	/**
	 * Gets the title associated to total of messages the user have
	 * 
	 * @param total
	 *            Number of messages the user have. The ranking will be returned
	 *            according to the range to which this total belongs to.
	 * @return String with the ranking title.
	 */
	public static String getRankTitle(int total) {
		Ranking lastRank = new Ranking();

		List entries = (List) cache.get(FQN, ENTRIES);
		for (Iterator iter = entries.iterator(); iter.hasNext();) {
			Ranking r = (Ranking) iter.next();

			if (total == r.getMin()) {
				return r.getTitle();
			} else if (total > lastRank.getMin() && total < r.getMin()) {
				return lastRank.getTitle();
			}

			lastRank = r;
		}

		return lastRank.getTitle();
	}

}
